NuAire AXUS AXR Instruction Manual

Introduct on
T e Nuaire AXR Roof mounted unit is designed to operate day
to day as standard roof extract fan. However, in t e event of a
fire, t e unit can extract smoke at temperatures up to 400oC
for a maximum of two ours. T e fans ave airflow rates up to
23m3/s and static pressure up to 555Pa.
The un t s ava lable n four case s zes
AXR 56, AXR 71, AXR 100, AXR 125.
(See page 3 for dimensions and weig ts). T e 56 and 71 units
are manufactured in aluminium alloy. 100 to 125 size units are
manufactured in polyester powder painted galvanised steel.
All units ave airflow operated s utters w ic are weat er
proof w en closed. T e bird/ safety guards on t e outlet are
designed to automatically displace if blocked by fire debris etc.
T e fans incorporate a directly driven, ig performance,
temperature rated, form ‘A’ aluminium alloy (300oC) and steel
(400oC) axial flow type impellers.
Access to t e impeller/motor is made by removing t e top
cover assembly.
Cod ng
AXR100 A413A7T
123 4 5 6789
1 AXUS roof mounted axial fan
2 Impeller diameter (mm)
3 Motor speed (poles)
4 Performance curve number
5 Impeller blade angle reference
6 Electrical supply in p ases
3 = 400V, 50Hz
7 Impeller material
A = Aluminium alloy
S = Steel (mandatory for 400oC units)
8 Operating temperature
7 = 300oC for 1 our
8 = 400oC for 2 ours
9 Ot er options (combinations possible)
T = Two speed, (full and alf)
T6 = Two speed, (full and two t irds)
(4/6 pole only)
F = Flameproof (EExd 11BT4) (300oC only)
Handl ng
Units are delivered to site mounted onto wooden transit
frames. In addition to making t e fans easier to andle during
transit, t e frames also afford protection for t e motor section.
We advise t at t e wooden frames s ould remain on t e fans
until t e moment of actual installation and fixing.
Handling t e unit is best carried out wt t e unit fixed to t e
transit frame. W en lifting, use spreader beams t roug t e
transit frame ensuring t e unit is evenly balanced and t at t e
lifting slings or webbing are not in direct contact wit t e
casing (see fig 1a).
T e larger unit (125) as lifting lugs fitted to eac lower
corner to w ic t e slings can be attac ed w ic makes t e
use of spreaders unnecessary. See figure 1b.
Note. W en releasing a larger unit from its metal transit frame
t e weig t of t e unit s ould first be supported by jacks under
t e unit motor supports before attempting to remove t e frame
fixing screws.
1
1000 & 1250 un ts are suppl ed w th eyelets bolted to the cowl,
THESE ARE ONLY TO BE USED TO REMOVE THE COWL FROM
THE BASE.
Under no c rcumstances must they be used to l ft the complete
un t. Note also that un ts must not be stacked.
AXUS AXR
H gh Temperature 300oC for 1hr, 400oC for 2hrs
Roof Mounted Axial Fan for Smoke Control
Installation and Maintenance
Figure 1a. Correct met od
of lifting using a spreader.
08. 05. 17. Leaflet Number 671063
The EMC D rect ve
2014/30/EU
The Low Voltage
d rect ve
2014/35/EU
Frame
retaining
bolts.
Dimension ‘X’
must be
adequate
to clear unit
casing.
Cowl lifting
eyes
(cowl only).
Figure 1b. Lifting a larger unit wit
lifting lugs on eac lower corner.
Nuaire: A Trading Division of Polypipe Limited Western Industrial Estate Caerphilly United Kingdom CF83 1NA
T: 029 2088 5911 F: 029 2088 7033 E: [email protected] W: www.nuaire.co.uk

Installat on and General Adv ce
Installation must be carried out by competent personnel, in
accordance wit good industry practice, t e appropriate
aut ority and in conformance wit all statutory and governing
regulations e.g. IEE, CIBSE, COSHHE, HVCA, ATEX, BSI & EN
standards etc.
F x ng
All t e units are designed to be fixed onto curbs (by ot ers)
alt oug pre-fabricated curbs manufactured in aluminium alloy
are available from Nuaire as optional extras. More information
about t e curb fixing arrangements is s own on t e following
pages.
Installat on Bu lder’s upstand
T e AXR fan unit must be securely attac ed to t e curb or
mounting to prevent damage by wind or vibration. Holes are
provided w ic allow t e unit to be directly attac ed. Fixing
bolts s ould be of non corrodible type).
Mount ng angle
The un t may be nstalled at any angle up to 400from the
hor zontal but the shutters MUST run up the slope to
ensure sat sfactory shutter operat on and weather seal ng.
Installat on and Ma ntenance AXUS AXR Hig Temperature Axial Fans
208. 05. 17. Leaflet Number 671063
Danger: Th s equ pment ncorporates rotat ng and mov ng parts
as well as electr cal components and conductors. It s the
respons b l ty of the nstaller to ensure that any such
tems that rema n externally access ble once the equ pment
s nstalled are adequately guarded.
Th s precaut on s necessary to avo d the poss b l ty of
acc dental njury or death.Part cular attent on must be pa d
to the nlet s de of rotat ng mpellers.
Prefabricated
Curb
Builders
Upstand
C & C
inside trimmer angles
A x A
D x D maximum
Flashing can be
extended over curb
or to underside of
timber
A x A minimum dim.
Inside roof opening
B
D x D maximum
150 min
150 min
Trimmer
Purlin
Wood capping
(optional 15mm
overhang)
Note:
Wooden capping to be
hardwood or treated
softwood.
Curb fixings
(by others)
usually into
wood capping
(Pack if clearance
is excessive
Curb (prefab
or builders
upstand)
Wood capping
Unit base frame
Flashing run
up the inside of
baseframe /
weatherskirt
Unit top cowl can
be removed for
access to impeller etc.
Venturi plate
Figure 2. Section t roug curbs / upstands.
Figure 3. Part section t roug typical upstands.
Curb D mens ons mm
Unit Code ABCD
AXR56 600 75 675 746
AXR71 800 100 875 1016
AXR100 1000 100 1100 1198
AXR125 1500 100 1160 1700

Un t D mens ons (mm) & we ghts (kg)
Installat on and Ma ntenance AXUS AXR Hig Temperature Axial Fans
308. 05. 17. Leaflet Number 671063
D mens ons mm Unit
Unit Code ABCDweig t kg
AXR56 845 570 535 746 93
AXR71 1100 770 760 1016 146
AXR100 1295 1000 880 1198 364
AXR125 1795 1300 1160 1700 615
FLOW
C
B
D sq inside skirt
A sq.
A sq.
Figure 5.
Installat on us ng a pre-fabr cated curb
Nuaire pre-fabricated curbs are manufactured in aluminium
alloy wit adjustable wooden cappings set to t e maximum
over ang position of 15mm.
T e roof flas ing can be run up t e sides of t e curb to finis
just beneat t e top. Alternatively if adequate clearance is
available t e flas ing could be run over t e top of t e capping
prior to lowering t e unit onto t e curb.
W en installed t e curb must be bolted securely to t e roof
trimmer angles.
Soaker sheet
Soaker s eets are manufactured in GRP and can be supplied to
matc most roof profiles. T e soaker s eet s ould be placed
over t e prefabricated curb, trimmed to eig t and built into t e
roof in accordance wit standard building practice.
Wooden capping
Figure 4. Nuaire pre-fabricated curb.

Installat on and Ma ntenance AXUS AXR Hig Temperature Axial Fans
408. 05. 17. Leaflet Number 671063
Electr cal Installat on - Motors
Motors comply wit BS5000 and IRC34-1; t ey ave sealed for
life ball bearings, IP55 enclosures and class H insulation.
Motors are tested for ig temperature operation in accordance
wit BS7346 (Part 2) and PR EN 12101-3.
NB Please note t e requirements for maintenance of t e motor.
Failure to comply wit t e recommendations will invalidate
any warranty claim.
W r ng General
Electrical supply wiring connection is to an externally mounted
terminal box on t e case exterior. T e box is pre-wired to t e
motor wit eat resisting cable.
NOTE: We recommend D.O.L. starting w enever possible.
Units of 4kW and above ave provision for Star/Delta starting
if t is is required (and is permitted by t e relevant aut orities).
Two speed motors must be wired for D.O.L. starting only.
Two speed motors, allowing normal ventilation at reduced
noise levels, are available on all units.
Connect on deta ls
Fans wit motors up to 3.0kW are suitable for connection in
t e STAR met od and also to a Direct On Line (DOL) starter.
T e Star connection will be made at works on all but t e EEXD
motors..
Fans wit motors of 4.0kW and above will ave all six ends of
t e motor windings broug t out to t e terminal box on all but
t e EEXD motors. T ese motors s ould be connected in t e
DELTA mes for connection to a DOL starter.
4.0kW motors and above are also suitable for connection to a
STAR / DELTA controller, but as smoke fans are required to
start wit t e minimum of delay in an emergency, t is met od
of control is not recommended.
Motor overload protection s ould be provided for continuous
running and routine testing. T is protection must be defeated
for emergency operation to allow t e fan to run to destruction.
Supply fuses s ould be H.R.C. type.
Start up procedure
Ensure t at t e impeller rotation follows t e label arrow
indicator on t e casing. S ould t e direction be incorrect on
t ree p ase units, reverse any two of t e supply leads. Care
s ould be taken to set correct rotation as incorrect rotation
may result in damage to t e motor.
Equipment s ould be run for approx. 30 minutes to ensure
correct operation.
If any fault occurs, t e equipment s ould be switc ed off.
Do not re-start until t e fault as been rectified.
Th s equ pment ncorporates rotat ng and mov ng parts as
well as electr cal components and conductors.
It s the respons b l ty of the nstaller to ensure that any such
tems that rema n externally access ble once the
equ pment s nstalled are adequately guarded.

Inverter control
Under fire conditions t e electrical supply must not run
t roug t e inverter - The nverter must be bypassed.
Where fans are connected to frequency nverter controls
the electr cal supply to the fan must bypass the nverter
under f re cond t ons.
Installat on and Ma ntenance AXUS AXR Hig Temperature Axial Fans
5
W r ng
Customer/installer wiring to t e termal box located on t e fan
casing.
S ngle Speed Un ts w th motors rated below 4kW
Are wired for D.O.L. starting only.
For safety reasons Nuaire recommends t at all Smokefoil units
are wired for D.O.L. starting.
All two speed un ts must be w red for D.O.L. start ng.
Note: Star /Delta starting is available but must only be used
w ere permitted by t e appropriate approval aut orities
Controls
A range of matc ing starters / controls are available.
Contact us to discuss your specific requirements.
Please specify D.O.L.or Star / Delta.
Test ng Warn ng!
Before carring out any test, c eck t at no loose items, tools etc.
are left inside t e unit. T e fan s ould not be operated wit
panels removed. If t is proves impractical (during testing for
example) ensure t at all personnel are well clear of t e unit.
Test ng - Switc on t e fan unit for a sufficiently long period to
ensure t at t e impeller runs correctly. Switc off during t e
rundown period c eck for correct direction of rotation and for
evidence of any fault as follows:-
a) C eck t at impeller is rotating freely wit no signs
of slipping.
b) C eck direction of rotation. A single p ase unit is unlikely
to be incorrect, as t e unit was carefully c ecked at works
prior to delivery. To c ange t e direction of rotation on
a t ree p ase unit simply reverse any two of t e supply
connections in t e isolator box.
W r ng D agrams
S
L1 L2 L3
Single Speed 3 phase (below 4kW))
400V 3 phase 50Hz supply
Fan
unit
L
4
1U 1V 1W
L
U1
L V1
L - W1
L
U1 - W2
L V1 - U2
L - W1 - V2
L W V U
4
Notes:
T
S
L N
S
L2 N L1
L
L2 N L1
L
L N L2 N N L1
L
L N L2 N N L1
L
L L3 N N L2 U V W
THREE PHASE UNITS
For specialist connections not s own always refer to t e wiring diagram
supplied wit t e unit. In t e event of query or uncertainty contact NUAIRE
directly before any connection is made.
S
S
L N
L1 L2 L3
S
U1
V1
W1
W2
U2
V2
3 phase for connection to a
STAR /DELTA STARTER (4kW and above)
2
400V 3 phase 50Hz supply
STAR
L1 - U1
L2 - V1
L3 - W1
Link W2, U2, V2
DELTA
L1 - U1 - W2
L2 - V1 - U2
L3 - W1 - V2
L1 L/L2 N/L3 PE/ W V U
400V 3 phase 50Hz supply
3 Phase only
INVERTER SPEED CONTROL
Connections
to motor
3 Phase input
Motor
3 phase
Notes:
Total length of motor leads should not exceed 50 metres.
If a screened motor cable is used, maximum length should
be 25 metres. Consult our Technical Department if you
wish to use longer leads.
Inverters are configured to suit specific fans and control
applications as described on the Customer Order
free of charge.
Matched Frequency Inverter
N
S
L N
S
Note:
For all D.O.L. (Direct On Line)
operation or Inverter type Speed Control
wire in DELTA
L2 N L1
L
L2 N L1
L
L N L2 N N L1
L
L N L2 N N L1
L
L2 L3
4
N L2 U V W
3 phase for DOL STARTING
(4kW and above)
400V 3 phase 50Hz supply
U1
V1
W1
W2
U2
V2
L1
L2
L3
S2 SPEED TAP/PAM WOUND MOTORS
(D.O.L. starting both speeds)
400V 3 phase 50Hz supply
4
1U
1V
1W
2U
2V
2W
Motor
terminal
box
NOTE:
HIGH SPEED
- Supply: 2U 2V 2W
LINK 1U 1V 1W
LOW SPEED
-Supply: 1U 1V 1W
S
PE/ W V U
4
Notes:
T
Consult our Technical Dep
Note: individual
wiring instructions
are included with
each unit
L2 N L1
L
L2 N L1
L
L N L2 N N L1
L
L N L2 N N L1
L
N L2 U V W
For DUAL WOUND motors call Nuaire for details
2
08. 05. 17. Leaflet Number 671063

608. 05. 17. Leaflet Number 671063
Installat on and Ma ntenance AXUS AXR Hig Temperature Axial Fans
Ma ntenance
Nuaire recommends all products maintained in accordance wit
t e HVCA “Standard Maintenance Specification for Mec anical
Services in Buildings” - Volume II Ventilating and Air
Conditioning and BS5588 Pt. 12.
Motor Ma ntenance
On go ng ma ntenance
Induction motors, by t eir very nature require minimal
maintenance. However, a regular regime of inspection is
recommended to ensure minor problems do not escalate into
breakdowns. Typical intervals would be 1000 ours of
operation or 3 mont s, w ic ever is t e sooner.
Ma ntenance Checkl st ✔
Item T ck
No visible damage i.e. impeller cracked, fan cowl
bent, foot cracked etc.
No accumulation of dust or fibres on t e frame
or around t e fan inlet.
No significant corrosion of t e lifting lugs/
eyebolts.
No excessive vibration.
No loose fasteners.
Cables and eart s are sound.
Sealing of t e motor and gland plate in
good condition.
Insulation resistance adequate, imperative t is
is c ecked after prolonged s utdown.
Regreasing of bearings required, 160 frames
and above.
Bearing condition.
Motor must be returned to manufacturer for repa r.
Because t e unit is certified to EN12101-3 and complying wit
t e construction products directive, t e motor must be
returned to t e motor manufacturer for replacement.
Enqu r es
Please contact Nuaire Limited for information on any aspects
of t e motor performance t at may need clarification.
Tel: [phone]
Contact must be made prior to any remedial action being taken
under guarantee.
Please quote te motor serial number in all suc cases wit
detailed description of te problem.
Pol cy
Our policy is one of continuous tec nical improvement and we
reserve t e rig t to alter any detail of our product at any time
wit out prior notice.
Warranty
T e 3 year warranty starts from t e day of delivery and
includes parts and labour for t e first year. T e remaining
2 years covers replacement parts only.
This warranty is void if the equipment is modified without
authorisation, is incorrectly applied, misused, disassembled, or
not installed, commissioned and maintained in accordance with
the details contained in this manual and general good practice.
Spec f c Comm ss on ng and
Serv ce Requ rements
Motors for Smoke Extract Fans
T ese motors are used to provide a SAFETY FUNCTION for
people in t e event of fire in public premises, t ey are t erefore
subject to strict constraints concerning t eir operating and
maintenance.
Operat ng Constra nts
i. C eck on t e nameplate t at t e selected motor
corresponds to t e maximum exposure temperature and
duration.
ii. AFTER THE MOTOR HAS BEEN SUBJECTED TO ONE
EMERGENCY DUTY OPERATION, IT MUST BE REPLACED.
iii. Wit variable speed control. Ensure t at t e maximum
speed never exceeds t e speed of t e motor supplied by
t e mains and t at t e delivered power corresponds to t e
previous definitions. T e motor s ould be equipped wit
PTC t ermistors connected to t e protection system
during day to day (S1 duty) and switc ed off during S2
duty (operation during an emergency).
Ma ntenance Constra nts
Regular service visits must be performed on t e installation
and EVERY 6 MONTHS, completing t e following c ecks:
. Check ng the nsulat on res stance
a) If t e drain oles are blocked, open t em to eliminate
any accumulated condensation.
. Cond t on of motor
a) Ensure t ere is no dust and grease e.g. motor, ousing
fins, motor cover/fan if fitted driven fan.
b) Ensure t e motor runs normally w en switc ed on for
a few minutes.
. Bear ng check
Run t e motor during eac maintenance visit. W en t e
motor is cold, a ig level of noise is caused by t e texture
of t e grease. T is does not indicate a bearing fault.
a) Permanently greased bear ngs.
Replace on 2 pole motors after 10,000 ours of operation
and on motors wit 4 poles or more after 20,000 ours.
b) Re-greaseable bear ngs
T e information on t e motor nameplates must be strictly
respected (grease quantity, grease quality and re-greasing
frequency). T e bearings must be replaced after 20,000
ours of operation.
Note: Any maintenance, repair or bearing replacement on t e
motor must only be undertaken by t e motor manufacturer in
accordance wit t e requirements of t e construction products
directive of Ref. 89/106/EEC.
The product warranty applies to the UK mainland and in
accordance with Clause 14 of our Conditions of Sale.
Customers purchasing from outside of the UK should contact
Nuaire International Sales office for further details.

Installat on and Ma ntenance AXUS AXR Hig Temperature Axial Fans
708. 05. 17. Leaflet Number 671063
Tec nical or commercial considerations may, from time to time, make it necessary to alter t e design, performance and
dimensions of equipment and t e rig t is reserved to make suc c anges wit out prior notice.
DECLARATION OF INCORPORATION AND INFORMATION FOR SAFE INSTALLATION,
OPERATION AND MAINTENANCE
To comply w th EC Counc l D rect ves 2006/42/EC Mach nery D rect ve and
2014/30/EU (EMC).
To be read n conjunct on w th the relevant Product Documentat on (see 2.1)
1.0 GENERAL
1.1 T e equipment referred to in t is Declarat on of Incorporat on is supplied by
Nuaire to be assembled into a ventilation system w ic may or may not include
additional components.
T e entire system must be considered for safety purposes and it is t e
responsibility of t e installer to ensure t at all of t e equipment is installed in
compliance wit t e manufacturers recommendations and wit due regard to
current legislation and codes of practice.
2.0 INFORMATION SUPPLIED WITH THE EQUIPMENT
2.1 Eac item of equipment is supplied wit a set of documentation w ic provides
t e information required for t e safe installation and maintenance of t e
equipment. T is may be in t e form of a Data s eet and/or Installation and
Maintenance instruction.
2.2 Eac unit as a rating plate attac ed to its outer casing. T e rating plate
provides essential data relating to t e equipment suc as serial number, unit
code and electrical data. Any furt er data t at may be required will be found
in t e documentation. If any item is unclear or more information is required,
contact Nuaire.
2.3 W ere warning labels or notices are attac ed to t e unit t e instructions given
must be ad ered to.
3.0 TRANSPORTATION, HANDLING AND STORAGE
3.1 Care must be taken at all times to prevent damage to t e equipment. Note t at
s ock to t e unit may result in t e balance of t e impeller being affected.
3.2 W en andling t e equipment, care s ould be taken wit corners and edges and
t at t e weig t distribution wit in t e unit is considered. Lifting gear suc as
slings or ropes must be arranged so as not to bear on t e casing.
3.3 Equipment stored on site prior to installation s ould be protected from t e
weat er and steps taken to prevent ingress of contaminants.
4.0 OPERATIONAL LIMITS
4.1 It is important t at t e specified operational limits for t e equipment are
ad ered to e.g. operational air temperature, air borne contaminants and unit
orientation.
4.2 W ere installation accessories are supplied wit t e specified equipment eg.
wall mounting brackets. T ey are to be used to support t e equipment only.
Ot er system components must ave separate provision for support.
4.3 Flanges and connection spigots are provided for t e purpose of joining to
duct work systems. T ey must not be used to support t e ductwork.
5.0 INSTALLATION REQUIREMENTS
In addition to t e particular requirements given for t e individual product, t e
following general requirements s ould be noted.
5.1 W ere access to any part of equipment w ic moves, or can become electr cally
l ve are not prevented by t e equipment panels or by fixed installation detail
(eg ducting), t en guarding to t e appropriate standard must be fitted.
5.2 T e electrical installation of t e equipment must comply wit t e requirements
of t e relevant local electrical safety regulations.
5.3 For EMC all control and sensor cables s ould not be placed wit in 50mm or on
t e same metal cable tray as 230V switc ed live, lig ting or power cables and
any cables not intended for use wit t is product.
6.0 COMMISSIONING REQUIREMENTS
6.1 General pre-commissioning c ecks relevant to safe operation consist of t e
following:
Ensure t at no foreign bodies are present wit in t e fan or casing.
C eck electrical safety. e.g. Insulation and eart ing.
C eck guarding of system.
C eck operation of Isolators/Controls.
C eck fastenings for security.
6.2 Ot er commissioning requirements are given in t e relevant product documentation.
7.0 OPERATIONAL REQUIREMENTS
7.1 Equipment access panels must be in place at all times during operation of t e
unit, and must be secured wit t e original fastenings.
7.2 If failure of t e equipment occurs or is suspected t en it s ould be taken out of
service until a competent person can effect repair or examination. (Note t at
certain ranges of equipment are designed to detect and compensate for fan failure).
8.0 MAINTENANCE REQUIREMENTS
8.1 Specific maintenance requirements are given in t e relevant product documentation.
8.2 It is important t at t e correct tools are used for t e various tasks required.
8.3 If t e access panels are to be removed for any reason t e electrical supply to t e
unit must be isolated.
8.4 A minium period of two minutes s ould be allowed after electrical disconnection
before access panels are removed. T is will allow t e impeller to come to rest.
NB: Care should st ll be taken however s nce a rflow generated at some
other po nt n the system can cause the mpeller to “w ndm ll” even when
power s not present.
8.5 Care s ould be taken w en removing and storing access panels in windy
conditions.
INFORMATION FOR SAFE INSTALLATION, OPERATION AND MAINTENANCE
OF NUAIRE VENTILATION EQUIPMENT
We declare that the mach nery named below s ntended to be assembled
w th other components to const tute a system of mach nery. All parts
except for mov ng parts requ r ng the correct nstallat on of safety guards
comply w th the essent al requ rements of the Mach nery D rect ve. The
mach nery shall not be put nto serv ce unt l the system has been
declared to be n conform ty w th the prov s ons of the EC Mach nery
D rect ve.
Des gnat on of mach nery: Hig Temperature Roof Axial Fan
Mach nery Types: AXR
Relevant EC Counc l D rect ves: 2006/42/EC (Mac inery Directive)
Appl ed Harmon sed Standards: BS EN ISO 12100-1, BS EN ISO 12100-2,
EN60204-1, BS EN ISO 9001,
BS EN ISO 13857
Appl ed Nat onal Standards: BS848 Parts 1, 2.2 and 5
Note: All standards used were current and valid at t e date of signature.
S gnature of manufacture representat ves:
Name: Position: Date:
1) C. Biggs Tec nical Director 26. 01. 11
2) A. Jones Manufacturing Director 26. 01. 11